Low Noise, Low Iq, 150-mA Low Dropout Linear Regulator with Adjustable Soft-Start - TPS788

TPS788 (ACTIVE)

Low Noise, Low Iq, 150-mA Low Dropout Linear Regulator with Adjustable Soft-Start

 

Description

The TPS78825 and TPS78833 are very small (SOT-23) package, low-noise LDOs that regulate the output voltage to 2.5 V and 3.3 V with input voltage ranging from 2.7 V to an absolute maximum of 13.5 V. These devices output 150 mA with a peak current of 350 mA (typ). The TPS788xx family uses the SR pin to program the output voltage slew rate to control the in-rush current. This is specifically used in the USB application where large load capacitance is present at start-up. The TPS788xx devices use only 17 uA of quiescent current and exhibit only 56 uV RMS of output voltage noise using a 10 uF output capacitor.

The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low, typically 150 mV at 150 mA of load current, and is directly proportional to the load current.

The TPS788xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C.

Features

  • 150-mA Low-Dropout Regulator
  • Available in 2.5 V, 3.3 V
  • Programmable Slew Rate Control
  • Output Noise Typically 56 uV RMS
  • Only 17 uA Quiescent Current at 150 mA
  • 1 uA Quiescent Current in Standby Mode
  • Dropout Voltage Typically 150 mV at 150 mA (TPS78833)
  • Over Current Limitation
  • -40°C to 125°C Operating Junction Temperature Range
  • 5-Pin SOT-23 (DBV) Package

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
TPS788
0.15   
Fixed Output   
2.7   
10   
2.5
3.3   
2.5   
3.3   
0.017   
150   
3   
56   
25   
Non-Ceramic   
Catalog   
0 to 70   
5SOT-23